论文部分内容阅读
用聚乙烯醇(PVA)作为还原剂和封端剂合成稳定的银纳米粒子,采用立体稳定法将银纳米粒子掺入聚合物基体中。用紫外-可见光谱、透射电子显微镜和傅里叶变换红外光谱等手段表征掺入聚合物基体中的银纳米粒子。紫外-可见光谱结果表明合成的银纳米粒子的特征峰为426 nm,透射电子显微镜表明银纳米粒子为球形,尺寸为10~13 nm,接着用紫外光照射还原,然后采用紫外-可见光谱分析其催化性能。结果表明,合成的银纳米粒子在亚甲基蓝还原中具有良好的催化性能。
Polyvinyl alcohol (PVA) was used as a reducing agent and end-capping agent to synthesize stable silver nanoparticles. The silver nanoparticles were incorporated into the polymer matrix by stereostable method. The silver nanoparticles incorporated into the polymer matrix were characterized by UV-Vis, TEM and FTIR. The results of UV-vis spectroscopy showed that the characteristic peak of the synthesized silver nanoparticles was 426 nm. The transmission electron microscopy showed that the silver nanoparticles were spherical with the size of 10-13 nm. Then, the silver nanoparticles were reduced by UV irradiation and analyzed by UV-Vis Catalytic properties. The results show that the synthesized silver nanoparticles have good catalytic performance in methylene blue reduction.